diff --git a/prebuilt/common/bin/backuptool_ab.sh b/prebuilt/common/bin/backuptool_ab.sh
index b96c594..edf472f 100755
--- a/prebuilt/common/bin/backuptool_ab.sh
+++ b/prebuilt/common/bin/backuptool_ab.sh
@@ -50,7 +50,7 @@
     return 0
 fi
 
-grep -q "^ro.omni.version=$V.*" /system/etc/prop.default /system/build.prop && return 1
+grep -q "^ro.omni.version=$V.*" /product/build.prop && return 1
 
 echo "Not backing up files from incompatible version: $V"
 return 0